GX2431P from GXCAS, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	DQ	bidirectional	1-Wire data input/output. Open-drain pin that carries both bidirectional serial data and parasitic power (2.5V-5.5V) to the device. Requires an external ~1 kΩ pull-up resistor to the host supply for normal operation, and a strong MOSFET pull-up during Copy-Scratchpad-to-EEPROM writes (tWR = 9 ms).
2	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
3	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
4	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
5	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
6	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
7	N.C.	unconnected	No connect. Leave floating or, per the datasheet, may be tied to ground.
8	GND	power_in	Ground reference for the device. Must be tied to system ground.

Key specifications

Parameter	Value
Manufacturer	GXCAS
Package	MSOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

GX2431PP
GX2431P
GX2431PVS
GX2431PWS
GX2431PD
GX2431PDVS
GX2431PT
GX2431PTVS
GX2431PQ
GX2431PG
GX2431PGA
GX2431PS

CAD (KiCad official)

Symbol: GX2431P
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`gx2431p.step`	123 KB	You want the bare part, or you mark your own boards.
`gx2431p-etched.step`	1.6 MB	You want the part with `GX2431P` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 404 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: GXCAS datasheet (29 pp, sha256 5faca98eb6d59ab4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF